Marx on a tightrope. the essence of freedom and the movement of becoming -- Kantian transcendence and beyond -- Knowledge and practice in trouble. a reasonable way out of ontological traps -- Liberal detours and their mishaps: negative liberty, I. Berlin, and J.S. Mill -- Agonic subjectivity and the stirrings of the new -- The social, the imaginary, and the real -- Freedom, agonism, and creative praxis -- Post-critical liberalism and agonistic freedom -- Post-foundational reason and sustainable affirmation -- Conclusion: past agonies and present openings of freedom.